CASE VAV
SAUTER CASE VAV Version 1.5
Parameterisation of VAV compact controller ASV115 Manual 7010022003 C
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CASE VAV Content
Content
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1 Preface 1.1 Most important features
5 5
2 Introduction 2.1 Information on use
7 7
3 Product structure 3.1 Process of configuration 3.2 Program structure
9 9 11
4 Safety warnings
13
5 Installation 5.1 System requirements 5.2 Scope of delivery 5.3 Software installation 5.3.1 Installation of SAUTER CASE VAV 5.3.2 Installation of driver for interface converter 5.3.3 Check installation 5.3.4 De-install software
15 15 15 15 16 18 21 22
6 Connection and configuration 6.1 Connect the interface converter 6.1.1 Setting the COM port 6.2 End parameterisation 6.3 Extras 6.3.1 Select communication address 6.3.2 Options 6.3.2.1 Units 6.3.2.2 Language 6.3.2.3 Communication
23 23 24 27 28 28 28 29 29 30
7 User interface 7.1 General structure of user interface
31 32
8 ASV115 parameterisation 8.1 Starting the programme 8.2 Start page 8.3 Export configuration 8.4 Import configuration 8.5 Create set-up protocol 8.6 Network Settings 8.7 Configure device 8.7.1 Selecting the device 8.7.2 Selecting the application 8.8 Overview page 8.8.1 Air terminal data
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CASE VAV Content 8.8.2 8.8.3 8.8.4 8.9 8.10 8.10.1 8.11 8.12 8.12.1 8.12.2 8.12.3 8.12.4 8.13 8.14 8.14.1 8.14.2 8.14.3 8.14.4 8.14.5 8.15 8.16 8.17
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Project data Project-based volume flow data VAV control loop parameter Project data Data for Air terminal Manufacturer’s data for Air terminal (AT) Mandatory data for the volume flow box I/O configuration Analogue input, Terminal 01 Analogue Input and Analogue Output, Terminal 02 Analogue output, Terminal 03 Digital Inputs, Terminal 04 and Terminal 05 Settings for VAV control loop VAV-setpoints Volume flow values Behaviour in case of malfunctions Setpoint shifting, ∆V (AI02) Forced operation, (DI 04 / DI05) Priority command, (AI01) Device information Monitoring Diagrams
45 45 48 49 50 50 51 52 52 54 55 56 57 58 58 61 62 63 64 65 66 67
9 Service functions 9.1 Manual operation 9.2 Zero point adjustment 9.3 Current value
69 69 70 70
10 Volume flow control 10.1 General information 10.2 Area of application 10.3 Functioning of the volume flow controller 10.4 General information on volume flow measurement 10.4.1 Measuring principles 10.5 Design of volume flow boxes 10.6 Calculation formulas 10.6.1 Volume flow calculation 10.6.2 Air density 10.6.3 Conversion of units
71 71 71 72 73 73 76 76 76 77 78
11 Customer service
79
12 Rectifying problems
81
List of Abbreviations List of illustrations List of tables Index
83 85 87 89
7010022003 C
CASE VAV Preface
1
Preface Congratulations on choosing Sauter software. You use the SAUTER CASE VAV software in combination with the VAV compact controller ASV115. Both items are quality products from a leading manufacturer of technical control equipment for heating, ventilation and air-conditioning. This manual describes the SAUTER CASE VAV configuration software, which was specifically developed for simple and cost-optimised parameterisation of VAV compact controllers. The SAUTER CASE VAV software tool offers menu guidance so that you can make all the settings required for the ASV115 to operate perfectly. The most important parameters for input and output configuration are also preset in the factory so that commissioning will be efficient. Special functions for current values and troubleshooting complete the functional scope.
1.1
Most important features • Extremely simple parameterisation for complex applications • Configurable units for country-specific adaptation • Overview page for rapid entry of the most important parameters • Tree view for rapid navigation through the individual configuration pages • Integrated access to plant schematic and connection diagram • Export function for commissioning parameters • Service functions for speedy troubleshooting • Structured user guidance • Current values of the most important operating parameters
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CASE VAV Introduction
2
Introduction This manual takes you step by step through the individual functions of the SAUTER CASE VAV software so that you can parameterise a VAV compact controller. Installation of the software on your PC is described, as well as the connection of the PC to a device via the RS485 interface. You will find the accessories required for these purposes in the relevant product documentation (PDS 52.100 or PDS 52.150) and in section 5.2 below in this document. You will find a general introduction to the subject of demand-led ventilation by means of volume flow control in section 10.
2.1
Information on use In general, this manual gives no separate descriptions of the usual Microsoft Windows functions such as TAB for navigating through menus, CTRL-C for ‘copy’ or CTRL-V for ‘paste’, unless they can be used to carry out a special function. Key combination ALT- can be used to open up list boxes inside combo-boxes. If functions can be performed with different sequences of commands, separate descriptions are given in each case. In some cases, the value for a parameter can be entered on different pages. In this case, note that the values are automatically transferred into the other parameter fields, so there is no need for multiple entries.
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CASE VAV Product structure
3
Product structure
3.1
Process of configuration The compact volume flow controller as delivered by SAUTER has been parameterised with a specified configuration (factory setting) as standard. To adapt this configuration to the requirements in your plant, the plant parameters are loaded into the compact volume flow controller via the interface. The actual parameters are entered via the graphic user interface of the SAUTER CASE VAV configuration programme. For configuration sequence, please refer to configuration flowchart below. Start
Network settings
Configure device
Configuration
1
2
1
Network settings
Configure address
NO
YES
Select device
Scan network
Assign new device address
Yes
Check device address
No
2
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CASE VAV Product structure
2
Select device
Check device / address
not OK
Check communication OK
Upload parameter from the device or import them from a file existing configuration
Configure device
new configuration
Change parameter / input new parameter
Zero point adjustment Adjust sensor
Yes
No
Download parameter (to device)
not OK
Select device
Check configuration / communication OK
Manual operation
Test functions
Online monitoring
Save configuration and print protocol
End
Fig. 1
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Configuration flowchart
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CASE VAV Product structure 3.2
Program structure SAUTER CASE VAV - Start page - I. Configure device - Select device (type, communication address) - Parameter settings - Overview - Project data - Air teminal - I/O-configuration - VAV control loop - VAV setpoints - Device information - Monitoring - Diagrams - Upload from device - Download to device - Zero point adjustment (of differential pressure sensor) - Manual operation - Current values - II. Network settings - Scan network - Get additional informations (reading the serial number and home address (if entered before) of the device) - Change address - File - Create configuration protocol - Import configuration - Export configuration - Exit - Extras - Select device - Options - Units - Language - Communication - Help - SAUTER CASE VAV Help - About - Exit
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CASE VAV
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CASE VAV Safety warnings
4
Safety warnings You must never operate an ASV115 which is damaged. In case of doubt, contact your local Sauter Service. You will find contact addresses for your nearest Sauter representatives in section 11 Customer service, or on the Internet at www.sauter-controls.com. • The ASV115 must only be used for its specified operational purpose, which is to control air volume flows in ventilation and air-conditioning installations. • It is prohibited to use the device in areas with explosion hazards. • It is prohibited to measure explosive gases with the built-in differential pressure sensor.
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CASE VAV Installation
5
Installation
5.1
System requirements To operate the software, you need: Hardware: • Processor: Intel Pentium, 1.5 GHz or higher • RAM: min. 1 GB • Hard disk: min. 5 GB free memory • DVD-ROM drive: for installing programmes and drivers • USB 2.0 connection: for interface converters • Monitor resolution: min. 1024 × 768 Software: • Framework: .Net Framework 4.0 or higher • Database: Microsoft SQL Server Compact 3.5 Service Pack 2 • Supported operating systems: • Windows XP Home with Service Pack 2 or higher • Windows XP Professional with Service Pack 2 or higher • Windows Vista Basic Service Pack 1 • Windows Vista Home • Windows 7 32 Bit and 64 Bit • Windows 7 Starter
5.2
Scope of delivery • A DVD-ROM with installation and configuration software SAUTER CASE Tools, including SAUTER CASE VAV, RS485-USB driver, .net 4.0 Framework, operating instructions and Adobe Acrobat Reader for viewing the operating instructions • Brief operating instructions: First Steps To make the hardware connection between Sauter ASV115 and the PC, you need additional components which must be ordered separately as applicable. Order number
Order text
0520450010
CASE-VAV-USB connection set including software
Tab. 1
5.3
Connection accessories, ASV115 - PC
Software installation NOTICE
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Only connect the ASV115 VAV compact controller to the PC when the software installation is completed and you are requested to do so by the installation software.
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CASE VAV Installation 5.3.1 Installation of SAUTER CASE VAV NOTICE
Parallel installations are not supported. SAUTER CASE VAV offers you three installation options: • Stand-alone installation via a zip file. The zip file is available for downloading from the SAUTER Extranet, ASV115 product page, section “Software“. • Installation via the SAUTER CASE Tools DVD-ROM. • Installation via the SAUTER CASE Suite DVD-ROM. General installation procedure 1. Start the installation wizard. Carry out one of the following two steps: • If you want to run the installation from the SAUTER CASE Tools or SAUTER CASE Suite DVD-ROM, please insert the DVD-ROM into the appropriate drive. The installation wizard should start automatically. If not, locate your DVD-ROM drive and double-click the programme Setup.exe. • If you want to run the installation via the zip file, first unzip the zip file and then double-click the programme Setup.exe.
Fig. 2
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Setup.exe in the SAUTER CASE VAV Tools DVD
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CASE VAV Installation
Fig. 3
Setup.exe in SAUTER CASE VAV stand-alone zip file
2. Select the language in which SAUTER CASE VAV is to be installed. NOTICE
You can change the language at any time after installation using the menu item Tools Options in the SAUTER CASE VAV software. 3. Read and accept the license agreement and click Continue. 4. You can select an installation directory for SAUTER CASE VAV in the next step. If you choose not to specify an installation directory SAUTER CASE VAV will be installed in the standard directory C:\Program\Files\Sauter. Click Next. 5. This step only applies to installation via the SAUTER CASE Tools DVD-ROM: choose the tools that you want to install. You must select CASE VAV as the bare minimum. Click Continue. ÂÂ The installation programme installs the software in the selected directory. ÂÂ After successful installation, the message Installation successfully completed appears. 6. Click Close to finish the installation procedure.
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CASE VAV Installation 5.3.2 Installation of driver for interface converter An RS485 interface is available on the device to connect the PC with the transducer. To address this via the PC, the interface converter that is used ,RS485 to USB, must be set up on the PC you are using. You will find the driver required for this purpose on the provided DVD-ROM. NOTICE
You need to install two drivers consecutively: first the “USB Serial Converter” driver and then the “USB Serial Port” driver. 1. Connect the interface converter to the PC at the interface provided for this purpose. ÂÂ Windows hardware detection starts automatically and queries the installation of the required drivers. 2. Installing the “USB Serial Converter“ driver. Carry out one of the following two steps: • If you want to install the driver automatically, first make sure that the RS485 driver directory is available on your hard drive or you have inserted the SAUTER CASE Tools or SAUTER CASE Suite DVDROM into the DVD drive. Then select the option Install the software automatically and then click Next. • If you want to install the driver manually, select the option Install software from a list or specific location. Then click Browse to select the drive and directory in which the driver is located (directory name: RS485USB-Driver). Click Next.
Fig. 4
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Installation mode of the “USB Serial Converter”
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CASE VAV Installation
Fig. 5
Entering the path to the RS485 driver directory
ÂÂ The system installs the “USB Serial Converter” driver.
Fig. 6
Installation of the “USB Serial Converter” driver in progress
ÂÂ Once the driver has been successfully installed, the message The Software for the following hardware has been installed: USB Serial Converter appears.
Fig. 7 Completion message following successful installation of the “USB Serial Converter” driver
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CASE VAV Installation 3. Click Finish. ÂÂ The assistant for detecting new hardware reappears to install the second driver (USB Serial Port). 4. Installing the “USB Serial Port“ driver: carry out the same steps as described under point 2. ÂÂ Once the driver has been successfully installed, the message “Software for the following hardware was installed: USB Serial Port“ appears.
Fig. 8 driver
Completion message following successful installation of the “USB Serial Port”
5. Check the Device Manager as described in section “6.1.1 Setting the COM port“ on page 24 to see whether the drivers were properly installed. The initial installation of a new interface converter on a PC always requires the installation of a new driver. We recommend that you always work with the same interface converter to avoid having to reinstall drivers.
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CASE VAV Installation 5.3.3 Check installation If the installation was successful, the SAUTER CASE VAV configuration software is now available and the icon for the SAUTER CASE VAV software is present on your desktop. 1. Double-click on the icon to launch the software. ÂÂ Click on Start All Programs and select under CASE Tools the CASE VAV Program.
Fig. 9
GUI: SAUTER CASE VAV start screen
If the start screen is not shown or if an error message appears, the installation was probably faulty. 2. De-install the software - see section “5.3.4 De-install software“ on page 22. 3. Install the software again as described in section “5.3.1 Installation of SAUTER CASE VAV“ on page 16. If your software installation is still unsuccessful, please contact your local Sauter representative for further support. You will find this representative in the ‘Customer service’ section. 4. After successfully installing the software, connect the necessary cable and interface converter to your PC as described in section “6.1 Connect the interface converter“ on page 23.
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CASE VAV Installation 5.3.4 De-install software It may be necessary to de-install the SAUTER CASE VAV software because: • an error occurred during the installation; • the SAUTER CASE VAV software is not working correctly and the problem could not be rectified; • you have a more recent software version and de-installation of the old version is recommended; • you no longer need the SAUTER CASE VAV configuration software and you want to release hard disk storage. To de-install the SAUTER CASE VAV software, perform these steps in order: 1. Remove the connected hardware components from your PC 2. Close all programmes that are running 3. Select Start Settings Control Panel Add or Remove Programs 4. In the list of installed programmes, find the entry for CASE VAV and click on it. 5. In the advanced view, you will now see the ‘Remove programme’ option 6. After you select this option, the de-installation process will start to remove the SAUTER CASE VAV configuration software from your PC.
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CASE VAV Connection and configuration
6
Connection and configuration Before you can configure a SAUTER ASV115, you need to connect and configure the network accessories. Furthermore common configuration parameters can be set.
6.1
Connect the interface converter Select the appropriate cables for the connection to the PC and connect them.
3
2
1
Fig. 10 Connecting the PC to the interface converter
To make the connection to the volume-flow compact controller, open the cap on the ASV115. The plug can be connected to the volume-flow compact controller through this opening.
1.2
1.1
B11664a
2
Fig. 11 Connecting the ASV115 to the PC NOTICE
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If several units are linked to each other, the interface converter must be connected at the start or the end of the network segment.
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CASE VAV Connection and configuration 6.1.1 Setting the COM port To connect the ASV115 to the PC, you have to set the correct COM port. The following procedure is recommended for this purpose: 1. Open the control panel via the start button.
Fig. 12 Windows system controller
2. Click Control panel.Double-click System. In the System properties dialogue which opens now, select the Hardware tab.
Fig. 13 Windows system setting
ÂÂ Click on the Device manager to open the overview of all available devices on your PC. The connected interface converter now appears under Ports (COM & LPT).
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Fig. 14 Windows Device manager
3. Note down the number of the COM port shown (USB Serial Port) and then start the SAUTER CASE VAV tool. 4. In the menu bar under Tools, open the Options dialogue and select the Communication tab. 5. Set the relevant COM port via the pull-down menu. ÂÂ For example, COM ports nos. 1 and 3 are available. However, this may vary from one computer to another due to the individual configuration and hardware equipment.
Fig. 15 Dialogue box: setting for COM port
6. Check the setting by connecting an ASV115 to the PC, as described in MV_ P100001127 B.
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CASE VAV Connection and configuration 7. Verify the communication of your connection. To do so, carry out one of the following two steps: • Verifying the communication of a point-to-point connection (only one device is connected): in the Options dialogue box click Check. ÂÂ SAUTER CASE VAV tries to communicate with the device and verifies that data can be sent and received. If communication with the device is successful, the system will report back the device type and firmware version. • Verifying the communication of a network connection (a number of devices are connected): 1. Click OK to close the Options dialoge box. 2. Click Configure device on the start page. 3. Select the device to be tested in the Select device dialogue box. 4. Select the option Communication address. 5. Enter the network address of the device that you want to verify. 6. Click Check ÂÂ SAUTER CASE VAV tries to communicate with the device and verifies that data can be sent and received. If communication with the device is successful, the system will report back the firmware version and the network address. ÂÂ If correct communication could be established, the field Communication in the status bar turns green. 8. Press OK to close the options dialogue box. These system messages may appear: Message
Meaning / action
GetIdentification returned: {} with address {}
All settings are OK and parameterisation can proceed.
Identification returned with: {}
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GetIdentification returned with error-code: TimeoutError on port COM {}.
The connection settings are OK but no device could be found at the connection. ff Please connect a device, check the COM port settings, the type of connection (point to point or network) or check the connection cables.
GetIdentification returned with error-code: Port Open Error on port COM {}.
1. Wrong COM port number selected. ff Set the COM port number as described in „6.1.1 Setting the COM port“ on page 24. 2. The COM port of your computer could not be addressed. ff Another application is using the COM port with the selected address. Check the addresses in the Device Manager and modify the COM port if necessary.
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CASE VAV Connection and configuration Message
Meaning / action
GetIdentification returned with error-code: CrCError for communication address: {}.
1. The connection settings are OK, but two or more devices are using the same connection address. ff Check the addresses in the network settings and adapt the device‘s connection addresses so that no address is assigned twice. 2. The wrong connection type was selected when verifying communication. ff Verify communication as follows: 1. Click Configure device on the start page. 2. Select the device to be tested in the Select device dialogue box. 3. Select one of the following options: • Point to point connection (PP) option if you have set up a point-to-point connection. • Communication Address option if you have set up a network and additionally enter the network address of the device you want to check. 4. Click Check.
GetIdentification returned with The connection settings are correct, however no error-code: TimeoutError for com- device corresponding to the selected address has munication address: {}. been found. Please check that this address exists: 1. Click on Network settings on the start page 2. Click on Scan network to find the devices connected to the network. 3. Note the communication address of the device to configure Tab. 2
6.2
System messages, connection test
End parameterisation After parameterisation is completed, disconnect the volume-flow compact controller from the PC and close the lock on the cover so that the original IP protection is restored.
Fig. 16 Disconnect ASV115 from PC 7010022003 C
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CASE VAV Connection and configuration 6.3
Extras
6.3.1 Select communication address You can establish a connection to the device of your choice. This can be useful if you want to: • Read the parameters of a device located in the network • Adopt parameters that are identical for all devices for each device NOTICE
The network address that you have entered always refers to the device type displayed in the information bar. To communicate with the network address of a different device type, you must first enter the device type. To do so, click Configure device on the start page. Carry out the following steps in order to establish communication with a device: 1. Select the menu item Tools Select Communication Address 2. Select one of the following options: • Select the Point to point connection (PP) option if you want to set up connection to a device in a point-to-point scenario. • Select the Communication address option and additionally enter the network address of the device if you want to establish communication with a device in a network. 3. Click OK. ÂÂ SAUTER CASE VAV establishes communication with the selected network address or device.
Fig. 17 Dialogue box: Select communication address
6.3.2 Options You can make country-specific adjustments and set the COM port via the menu item Tools Options.
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CASE VAV Connection and configuration 6.3.2.1
Units On the Units tab, you can adjust the units to be used by the software to your personal circumstances.
Fig. 18 Dialogue box: Options Units
The following options are available here. Physical unit
Adjustable units
Length
mm, inch, ft
Area
m2, inch2, ft2
Pressure
Pa, psi
Volume flow
m3/h, l/s, cfm, cim
Density
kg/m3, pci, pcf
Tab. 3
6.3.2.2
Adjustable units
Language The Language settings menu enables you to change the programme language. You can choose between English, French and German.
Fig. 19 Dialogue box: Options Language
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CASE VAV Connection and configuration 6.3.2.3
Communication The Communication tab shows the available COM ports. Here you can enter the COM port number that SAUTER CASE VAV should use to communicate with the devices and verify point-to-point communication. Set the COM port number as described in “6.1.1 Setting the COM port“ on page 24.
Fig. 20 Dialogue box: Options Communication
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CASE VAV User interface
7
User interface The programme is designed so that simple and structured user guidance is ensured. After starting the programme, the Start page is called. This page serves to call up the configuration points Network Settings and, in the event of initial configuration, the access to device configuration, Configure device. You have two options for reconfiguring a configured device: • The function Change device parameterisation allows you to the change the parameters of a device. The application remains the same (see also “Tab. 7 Supported applications for the ASV115CF132“ on page 43 or “Tab. 8 Supported applications for the ASV115CF152“ on page 43. • The function Reconfigure existing device application allows you to assign a new function to the selected device. In this case, you will also have to parameterise the device again. For more information on the functions described on the start page, see “Tab. 4 Start Page functions“ on page 35.
Fig. 21 GUI: SAUTER CASE VAV start page
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CASE VAV User interface 7.1
General structure of user interface 1
5
6 2
7
3 4
Fig. 22 GUI: User interface, SAUTER CASE VAV 1
Menu bar
2
Navigation tree
3
Upload and download control
4
Information line
5
Navigation bar
6
Input mask
7
Service functions
The user interface is divided into different areas. Basically, these can be separated into the information and navigation areas, and the areas for data entry. Menu bar
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The menu bar contains basic functions for parameter printing or application configuration and to provide information about how the individual functions work. The product documentation can also be accessed from the Help area.
Navigation bar
Navigation buttons in the navigation bar allow you to move between the Start page and the area for device parameterisation.
Navigation tree
The navigation tree shows all the pages that are available to configure the volume-flow compact controller in a clear form. Click on the relevant page to activate it.
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CASE VAV User interface Information line
Service functions
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The information line and status bar provide the most important data about the connected volume-flow compact controller in a clear form. Special functions such as sensor calibration, manual mode or current values to support commissioning are provided in the service area.
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CASE VAV User interface
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CASE VAV ASV115 parameterisation
8
ASV115 parameterisation The following section gives a step-by-step description of the functions available within the SAUTER CASE VAV software to parameterise a VAV volume-flow compact controller. Before parameterisation, an ASV115 must first be physically connected and configured as described in section 5.
8.1
Starting the programme You can call up the programme from the Start menu at Start Programmes Sauter CASE Tools CASE VAV in order to start it. A Welcome screen appears briefly at first, and then the Start page is displayed.
8.2
Start page The following functions are available for you to choose from the Start page. Icon
Tab. 4
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Function
Description
Device configuration
Click on the function to configure a device that is not yet configured, or to change the configuration of a parameterised device. Directly after the overview page appears, you can select the Upload from device function to do this; the data stored in the device will then be loaded. After selecting the function, the Parameter settings – Overview page is shown.
Change device parameterisation
The device application is maintained; only the parameters can be changed. A click on the function calls up a dialogue box where you can select the network address of the device that you want to reparameterise. The device parameters will be uploaded when you have selected the network address.
Reconfigure existing device application
This function allows you to assign a new application to a device. The data of the menus Projekt Data and Air Terminal Data are maintained for the new application. A click on the function calls up a dialogue box where you can select the network address of the device to which you want to assign a new application. When you select the network address, you will see a message asking you to select the new application. Once you have selected the application, the data of the menus Air Terminal Data and Projekt Data are uploaded and the user interface for parameterisation opens.
Network settings
The Network settings can be used to read in a section of the network automatically in order to determine which devices are available in the network segment. In the event of an address collision, it is possible to configure the network addresses in the Network settings area.
Exit
Select this function to end the programme.
Start Page functions
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CASE VAV ASV115 parameterisation 8.3
Export configuration You can export and save the configuration of the ASV115 to a file to back up the device configuration or to document the project. When you do so, you can choose which configuration data you want to save (the default selection is all data): • Data of the following menus: • Project Data • Air Terminal Data • I/O-configuration, VAV control loop, VAV setpoints and Device information • As well as the application code and device type Carry out the following steps to export the data to a file: 1. Select File Export configuration. 2. You can add a description of the export file in the Description and the Name fields to enable unambiguous identification. The default name consists of the entries of the air terminal fields Typ, Vmin and Vmax. 3. Click Browse and select the directory where you want to save the file. Change the file name if needed. 4. Click Details if you want to select individual data for export. The default setting is to export all of the data in a file. 5. Click Export to export the selected data to a file.
Fig. 23 Dialogue box: export the configuration to a file
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CASE VAV ASV115 parameterisation 8.4
Import configuration The function Import configuration allows you to import the configuration from a file into SAUTER CASE VAV. This function can be useful for uploading or restoring a previously-saved device configuration, for instance. Carry out the following steps to import a configuration into CASE VAV: 1. Select File Import configuration. 2. Click Browse to locate the directory where the file is archived. 3. In the Select file table, select the line with the file that you want to import. 4. Click Details if you want to select individual data for import. The default setting is to import all of the data in a file. 5. Click Import to import the selected data from the file.
Fig. 24 Dialogue box: import the configuration from a file
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CASE VAV ASV115 parameterisation 8.5
Create set-up protocol All configuration data can be printed to a file using the Print function: go to the File menu Create set-up protocol. After calling up the function, you first see an input dialogue where you can add a comment.
Fig. 25 Dialogue box: print configuration
Confirm the dialogue with OK and the protocol is generated, with all the available data. To store or continue processing the data, or to print them out later on, you are offered a large number of different formats. 8.6
Network Settings In the Network Settings function, the devices connected in the network are shown and configured if necessary.
Fig. 26 GUI: network settings
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CASE VAV ASV115 parameterisation To configure connected devices, you must first click on the Scan network button to start a search. To do so, carry out the following steps: 1. Select Network Settings on the start page. 2. Click Scan network. ÂÂ The programme then checks whether there are any devices in the network and lists them in table form, after a timeout of 30 s. at most. During the search, the searched address appears in the Current address field with the network address of the device in the list. 3. Once all the devices in the network segment have been listed, you can terminate the search by clicking Abort. The following information is shown: Parameter
Description
Communication address
On delivery, every device has been given an individual network address in the range from 1….200.
Change address
Click on the address shown to reconfigure it in the menu.
Address collision
If two or more devices attempt to communicate on one address, there will be an ‚address collision‘. This is shown by a red symbol.
Device type
The device type is shown as per the labelling on the nameplate
Houseaddress
The house address is shown, if it is parameterised. The house address is displayed after pressing the Get additional information button.
Serial number
The serial number uniquely identifies a particular device. It is issued by the factory. On clicking the ‚Additional information‘ button, it is read in via the network.
Tab. 5
Parameters for network configuration
If a device is explicitly selected, you can press the Change address button to call up the Change communication address dialogue.
Fig. 27 Dialogue box: change address
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CASE VAV ASV115 parameterisation The following options are available: • If only one device is connected, it is mandatory to select the Point to point connection (PP) function. The volume-flow compact controller is then addressed directly. • If two or more devices are present in the network, the address of the desired device must be selected via the Communication address function. • If you know the device‘s serial number, you can enter it in the Serial field field. This makes it possible to differentiate between two devices with the same address (collision) and to assign a new unique address to one of the devices without having to disconnect it from the network. • The New address function allows manual assignment of a new network address. This may be selected from the 1…200 range. 8.7
Configure device To configure a new device, please select the Configure device menu item. Then you can choose the device you want by selecting the type designation. In general, device types with a 150Pa and 300Pa sensor are available for this purpose. Once you have selected the device, you must then select the application you want to assign to it. The corresponding default parameters are loaded into the parameter setting area depending on the selected application.
8.7.1 Selecting the device NOTICE
Please make sure that the correct device is selected here. An incorrect assignment can cause an error message when downloading the parameters into the device, because the software does not allow parameterisation of devices with values that do not match the sensor’s measuring range. Device type
time of Sensor‘s measuring Running volume-flow compact range controller
ASV115CF152D
150 Pa
3-15 s
ASV115CF152I
150 Pa
3-15 s
ASV115CF152E
300 Pa
3-15 s
ASV115CF152K
300 Pa
3-15 s
ASV115CF132D
150 Pa
30-120 s
ASV115CF132I
150 Pa
30-120 s
ASV115CF132E
300 Pa
30-120 s
ASV115CF132K
300 Pa
30-120 s
Tab. 6
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Halogen-free cable
x x x x
Available device types
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CASE VAV ASV115 parameterisation
Fig. 28 Dialogue box: device selection
In the ‘Change address’ area, you can select the Point-to-point connection PP or Individual address functions. The individual address can be determined in the Network settings area. After setting the address, you can test communication with the Check button. If only one device is connected, the Point-to-point function must be selected. If more than one device is present in the network, the Point to point PP connection function must not be used. The valid address in each case must be set at Individual address so that the desired device is addressed directly. 8.7.2 Selecting the application Various applications are available, depending on the device type. The default parameters in the applications are defined in a way that prevents incorrect configurations in the field. The Tab. 7 and Tab. 8 show the available applications and their varying default parameters for the corresponding devices. You have two options for selecting an application: • Select the option Selection by application-code and enter the application code in the fields provided. • Select the option Selection by application and select the application from the selection fields.
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CASE VAV ASV115 parameterisation
Fig. 29 Dialogue box: device configuration selection
Supported applications for the ASV115CF132:
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Application Code/Definition
I/O configuration
Setpoints
VAV.01.001.M Volume flow control
AI01: Command variable signal AI02: Setpoint shift AO3: Volume flow – actual value DI04: NO contacts DI05: NO contacts
Vnom = 100 % Vmax = 90 % Vmid = 50 % Vmin = 20 % Vint = 50 %
VAV.10.001.M Demand-led ventilation in individual room master-master control
AI01: Command variable signal AO02: Damper position* AO3: Volume flow – actual value DI04: NO contacts DI05: NO contacts
Vnom = 100 % Vmax = 90 % Vmid = 50 % Vmin = 20 % Vint = 50 %
VAV.20.001.M Demand-led ventilation in individual room master-slave control (Master controller)
AI01: Command variable signal AO02: Damper position* AO3: Volume flow – actual value DI04: NO contacts DI05: NO contacts
Vnom = 100 % Vmax = 100 % Vmid = 50 % Vmin = 10 % Vint = 40 %
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CASE VAV ASV115 parameterisation Application Code/Definition
I/O configuration
Setpoints
VAV.20.001.Sxi Demand-led ventilation in individual room master-slave control (Slave controller)
AI01: Command variable signal AO02: Damper position* AO3: Volume flow – actual value DI04: Schliesser DI05: Schliesser
Vnom = 100 % Vmax = 100 % Vmid = 50 % Vmin = 10 % Vint = 40 %
Tab. 7
Supported applications for the ASV115CF132
* Function for devices with firmware version 1.10 and higher Supported applications for the ASV115CF152: Application Code/Definition
I/O configuration
Setpoints
VAV.01.001.M Volume flow control
AI01: Command variable signal AI02: Setpoint shift AO3: Volume flow – actual value DI04: NO contacts DI05: NO contacts
Vnom = 100 % Vmax = 90 % Vmid = 50 % Vmin = 20 % Vint = 40 %
RPC.20.001.M Demand-led ventilation in individual rooms with room pressure control through setpoint shift for return air. (Master controller)
AI01: Command variable signal AO02: Control deviation AO3: Volume flow – actual value DI04: NO contacts DI05: NO contacts
Vnom = 100 % Vmax = 100 % Vmid = 50 % Vmin = 20 % Vint = 40 %
RPC.20.001.Sxi Demand-led ventilation in individual rooms with room pressure control through setpoint shift for return air. (Slave controller)
AI01: Command variable signal AO02: Setpoint shift AO3: Volume flow – actual value DI04: NO contacts DI05: NO contacts
Vnom = 100 % Vmax = 100 % Vmid = 50 % Vmin = 20 % Vint = 40 %
FCC.10.001.M Volume flow control for laboratory fume cupboards Setpoint specification as per switch contacts
AI01: Command variable signal AO02: Control deviation AO3: Volume flow – actual value DI04: NO contacts DI05: NO contacts
Vnom = 100 % Vmax = 100 % Vmid = 50 % Vmin = 20 % Vint = 40 %
FCC.10.002.M Volume flow control for laboratory fume cupboards Setpoint specification as per sash sensor
AI01: Command variable signal AO02: Control deviation AO3: Volume flow – actual value DI04: NO contacts DI05: NO contacts
Vnom = 100 % Vmax = 100 % Vmid = 50 % Vmin = 20 % Vint = 40 %
FCC.20.001.M Volume flow control for laboratory fume cupboards Setpoint specification as per flow sensor
AI01: Command variable signal AO02: Control deviation AO3: Volume flow – actual value DI04: NO contacts DI05: NO contacts
Vnom = 100 % Vmax = 100 % Vmid = 50 % Vmin = 15 % Vint = 40 %
FCC.20.020.M Volume flow control for laboratory fume cupboards Setpoint specification as per flow and sash sensor
AI01: Command variable signal AO02: Control deviation AO3: Volume flow – actual value DI04: NO contacts DI05: NO contacts
Vnom = 100 % Vmax = 100 % Vmid = 50 % Vmin = 15 % Vint = 40 %
Tab. 8 NOTICE
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Supported applications for the ASV115CF152
The application schemas are described in PDS 52.100, 52.150 and 43.160
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CASE VAV ASV115 parameterisation 8.8
Overview page The Overview page concentrates the most important parameters for the configuration of the ASV115. Entering the parameters flagged with a red * performs the minimum configuration of the volume flow controller for which the basic function is guaranteed. All the parameters provided on this page can be reached on the respective detail pages, via the navigation tree; however, they only need to be entered once. The programme automatically copies the parameters. For the same reason, these parameters are also described twice in the manual, with more in-depth information on the detail pages as necessary or appropriate.
8.8.1 Air terminal data In the top section of the Overview page, you can enter the most important data regarding the volume flow box that is used.
Fig. 30 GUI: data for volume flow box - overview Parameter
Description
Manufacturer Supplier of the volume flow box; max. 32 characters Type
Type designation of the volume flow box as used by the manufacturer. This information is usually shown on the nameplate. Max. 32 characters.
Dimension
Select the Set link to go to the Volume flow box input mask. Values for the diameter or length x width of the volume flow box can be entered here. The values are used to calculate the air velocities for a given volume flow.
Vn AT
Enter the nominal volume flow (rated volume flow) for the volume flow box. This is usually a value indicated by the volume flow box manufacturer, representing the maximum volume flow value over the volume flow box in relation to its respective size. The emphasis is on considerations of acoustics or energy here. The maximum value that can be set is 54,000 m3/h, corresponding to 15,000 l/s.
unit Vn AT
Change the unit for the indicated volume flow. By default, the unit used is the one set in the Options menu.
c-factor
Enter the value indicated by the volume flow box manufacturer. This is a constant defined for the size of the volume flow box. Make sure that the constant is used in the same units as the volume flow.
at air density
By default, the air density is defined as 1.2 kg/m3. If the c-factor indicated by the manufacturer is shown with a different air density, this must be entered at Air density.
Tab. 9
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Data on volume flow box - overview
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CASE VAV ASV115 parameterisation 8.8.2 Project data The Project data section enables you to enter information that will clearly locate the volume flow controller in the building. Additional information can be entered in the separate Project data mask.
Fig. 31 GUI: General project data - overview Parameter
Description
Floor / Cabinet
Input field for floor designation or number, max. 12 characters
Plant device identification Input field for the device designation, max. 12 characters Room
Input field for the room designation, max. 12 characters
Houseaddress
Enter the house address, maximum 64 characters
Supply air / Exhaust air (SA / EA)
Dropdown box to select the installation location; supply air (SA) or exhaust air (EA).
Tab. 10 General project data - overview
8.8.3 Project-based volume flow data To set the project-based volume flow data, the following data must be specified as the minimum. The following definitions apply here: • The air density at the installation location can vary greatly, compared to the air density at set-up in the factory, due to the height above sea level, causing intolerable deviations in the air volumes. This can be avoided by entering the air density at the installation location. The correction is made directly in the programme. • The design value Vn AT of the volume flow box becomes effective with the correction of the air density for Vn. For example, Vn AT represents the nominal volume flow over the volume flow box which is attained at a dp of approx. 250Pa and which corresponds to an air velocity of approx. 12 m/s. These values may differ depending on the various manufacturers of volume flow boxes, and they correspond to the value for the volume flow box in the manufacturer’s catalogue. • Vn effective corresponds to the Vnominal effective which is parameterised when calibrating the volume flow box at the manufacturer’s factory. The effective air density is integrated into this value at the time of parameterisation. • Vnom corresponds to the nominal volume flow in the plant. The sensor is calibrated to this value so that the measuring range corresponds to 100% of the plant volume flow.
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CASE VAV ASV115 parameterisation • Vmax limits the command variable signal to the maximum desired volume flow in the plant. According to choice, the value can be entered as an absolute value or a percentage, in relation to Vn effective or Vnom. V 100%
Vnom
Vmax
Calculation of Vmax in %
0 0
10V
B11586
Vmin
Vmax
& m3 Vmax h (%) = * 100% & m3 Vnom h
• Vmid is a freely paramaterisable value between Vmax and Vmin. The following rule is applicable: Vmax ≥ Vmid ≥ Vmin • Vmin limits the command variable signal to the minimum desired volume flow in the plant. According to choice, the value can be entered as an absolute value or a percentage, in relation to Vn effective or Vnom.
Calculation of Vmin in
& m3 Vmin h * 100% %: Vmin (%) = m3 V& nom h
• Vint is an additional internal setpoint which can be used for different functions. Vint is only limited by Vnom. Hence, Vnom ≥ Vint • The setpoints for the air volume flows are entered directly in m3/h or per cent and relate to Vn effective or Vnom. • The coloured display for a rapid visual check of air velocity (and hence the design data) follows generally used conventions: • Red air velocities > 10 m/s • Yellow air velocities from 8 m/s to 10 m/s • Green air velocities between 3 m/s and 8 m/s • Yellow air velocities from 2.5 m/s to 3 m/s • Red air velocities < 2.5 m/s
Fig. 32 GUI: volume flow setpoints - overview
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CASE VAV ASV115 parameterisation Parameter
Description
Local air density Correction of air density if the installation varies greatly from the factory calibration by the volume flow box supplier. If this value diverges significantly, e.g. due to the installed height above sea level, these variables can be changed to correct the c-factor and the nominal volume flow. Vn effective
Maximum volume flow over the volume flow box, corrected by the air density at the installation location.
Vnom
Volume flow to which the internal pressure sensor is automatically set. Vnom therefore corresponds to the signal range in relation to 100% for the maximum controllable volume flow in the plant.
Setpoint Vmax
Maximum permitted volume flow for the application. Values are determined on a project-specific basis. Adjustable range: V1Pa…Vnom.
Setpoint Vmin
Minimum permitted volume flow for the application. Values are determined on a project-specific basis. Adjustable range: V1Pa…Vmax.
Tab. 11 Volume flow setpoints - overview
All values can be set as absolute values or percentage values in relation to the nominal value. Additional information on volume flow control, the design of volume flow boxes and application-specific aspects is given in the section on Volume flow control. The exact method of determining the air density is also shown there, in the Calculation formulas section. All volume flow parameters indicated in per cent in relation to the nominal plant volume flow are given with grey background to improve overall clarity.
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CASE VAV ASV115 parameterisation 8.8.4 VAV control loop parameter Basic parameters to configure the volume flow control loop can be entered in the ‘VAV control loop parameter’ area.
Fig. 33 GUI: settings for control loop – overview Parameter
Description
Pressure sensor: Damping Sets the internal signal damping on the pressure sensor. If the pressure signal fluctuates, the damping can be increased to avoid vibration of the volume-flow compact controller. Setting range: • 0.000 s • 0.010 s • 0.020 s • 0.041 s • 0.082 s • 0.163 s • 0.326 s • 0.650 s • 1.300 s • 2.600 s • 5.220 s Controller: P-band
According to choice, the P-band can be entered in m3/h or %. The reference variable is Vnom.
Controller: Neutral zone
The neutral zone can be entered in m3/h or in % as chosen. The reference variable is Vnom.
Volume-flow compact cont- Setting for the volume-flow compact controller drive time for roller: Drive time a 90° angle of rotation. Setting range: ASV115CF152
ASV115CF132
3 s
30 s
4 s
45 s
5 s
60 s
6 s
75 s
8 s
90 s
10 s
105 s
12 s
120 s
15 s Volume-flow compact cont- CW damper opens clockwise roller: Direction of rotation CCW damper opens anti-clockwise Tab. 12 GUI: control parameters - overview
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CASE VAV ASV115 parameterisation 8.9
Project data All the important data for clear location of the device in the field can be entered or changed on the Project data page. The data are stored directly in the volume-flow compact controller and can be read out again or changed as necessary. If the ‘GAMP-conform Test Report’ function is selected, entries for a name, abbreviation and configuration date are forced.
Fig. 34 GUI: Project data Parameter
Description
Project identification
Enter a nine-digit alphanumeric project number for identification
Project name
Enter the project name with a maximum of 64 characters
Building / Objectname
Identification of the building with a maximum of 12 characters
Floor / Cabinet
Input field for floor designation or number, max. 12 characters
Plant device identification
Input field for device designation, max. 12 characters
Room
Input field for room designation, max. 12 characters
Houseaddress
Enter the house address, maximum 64 characters
Installation location: Supply air Dropdown box to select the installation location; supply / Exhaust air air (SA) or exhaust air (EA). Parameterised date
Date and time of the last download are set automatically and stored. Data are taken from the PC.
Checkbox: GAMP-conform test report
Entries are forced for user name, abbreviation and date. The data must be in the defined format. Name: at least 5 characters, maximum 32 characters. Date must be in the mm/dd/yyyy format.
Tab. 13 Project data 7010022003 C
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CASE VAV ASV115 parameterisation 8.10 Data for Air terminal All data entered on this page are automatically transferred into the identical fields on other pages, so there is no need for double entry of parameters. 8.10.1 Manufacturer’s data for Air terminal (AT) To optimise the project documentation, the key design-specific data of the VAV box can be entered and stored directly in the volume-flow compact controller.
Fig. 35 GUI: General data for the volume flow box Parameter
Description
Manufacturer
Enter the manufacturer‘s code for the volume flow box. Maximum 32 characters
Type
Manufacturer-specific type designation for the volume flow box. Maximum 32 characters
Material
Material specification for the volume flow box. Maximum 32 characters.
Geometry: Dimension
The programme automatically enters the volume flow box dimension. This is governed by the data that were entered in the input fields for Circular AT volume flow boxes - Diameter (duct diameter entry) - or Rectangular AT (box height and width entry). The dimension data are needed to calculate the flow speed in the volume flow box, among other purposes.
Tab. 14 General data for volume flow box
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CASE VAV ASV115 parameterisation 8.11 Mandatory data for the volume flow box The area for entering technical air data for volume flow boxes is used to enter the basic information used for all subsequent calculations.
Fig. 36 GUI: Technical air data for the volume flow box
These data are entered on the basis of the data available for the volume flow box. The information is generally provided via the c-factor for the volume flow box at an air density of ρ = 1.2 kg/m3. This air density is already pre-set for this reason. If the available c-factor and the maximum volume flow Vn AT are now entered in the Basic data area, the programme will convert the c-factor to the value adjusted for the air density (c-factor for ρ = 1 kg/m3) for further internal processing. If a standardised c-factor is available, it can be used directly in the upper section of the input mask. The Convert button allows direct adaptation of the c-value on the basis of the various air densities. The conversion has to be triggered manually, and is then performed from the Mandatory typical values area to the Application specific values area. If values in the Application specific values area are changed, the conversion takes place automatically. It is possible to use plant-specific data by enabling the function to Overwrite AT values. As a result, the typical values that were entered are saved, but it is possible to carry out a special correction locally in the plant. The functionality is the same as described above, but in this case the values are in relation to Vn effective. With the Convert button, the adaptation can take place in both directions.
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CASE VAV ASV115 parameterisation
Fig. 37 GUI: Override original values
8.12 I/O configuration The I/O configuration page is available for detailed parameterisation of the inputs and outputs. Each input or output can be set separately, so the volume-flow compact controller can be adapted individually to a wide variety of application cases. 8.12.1 Analogue input, Terminal 01
1
Fig. 38 GUI: parameter AI 01
1 results in e.g. an overrun of the signal 0...10 V = 0...100% to 0...12 V = 0...120%.
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CASE VAV ASV115 parameterisation
Parameter
Description
Function
The Function field is used to identify the function for the analogue input. The technical control function is shown here. Factory setting: setpoint for volume flow cqv.s
Mode
Mode switchover is used to change the input range for the input manually. The factory setting is 0…10V. To change over to other ranges, click on the radio button. In addition to the 0…10V range, a 2…10V range and a freely configurable range can generally be selected. The free configuration function allows reversal of the signal range to 10…0V, for example.
Input: Damping
In case of severely fluctuating signals or electronic interference signals, the adjustable input damping can present oscillation of the control loop. The following parameters are available for damping. Setting range: • 0.000 s • 0.10 s • 0.20 s • 0.41 s • 0.82 s • 1.63 s • 3.26 s • 6.50 s • 13.00 s • 26.00 s • 52.20 s
Adjust range: Logical State
The analogue inputs have automatic signal recognition. The threshold values for the functional assignment of the input in case of insufficient or excess voltage are set by entering parameters. These parameters can be used in conjunction with the Priority command (AI01) function to define which function the volume-flow compact controller should execute when the parameterised values are attained. The factory settings for the value ranges are shown in Table 14 and they differ in 0…10V and 2…10V mode.
Vnom
10V
Vmax 5
Vmin 100% V
0
0
5
10V
B11582
0
Tab. 15 Description of parameters for analogue input Designation
Value range 0..10V
Value range 2..10V
NC = open
-0.69 V
-0.69 V
LOW Voltage
-0.5 – 0.3 V
- 0.5 – 2.2 V
NORMAL Voltage
0.7 – 9.8 V
2.2 – 9.8 V
HIGH Voltage
10.2 – 11 V
10.2 – 11 V
OVER voltage
> 11.4 V
> 11.4 V
Tab. 16 Factory settings: value ranges for input recognition
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CASE VAV ASV115 parameterisation 8.12.2 Analogue Input and Analogue Output, Terminal 02
Fig. 39 GUI: parameters AI/AO 02
V Vnom
100%
Parameter
Description
Function
The function for the input is selected automatically in the Function field. In case of configuration as an input or output, the entry in the function field shows the technical control function. Factory setting for input: cqV.p.ad (∆w), room pressure correction shift from room pressure controller RLE150F100 After switching the connection over as an analogue output, it makes the setpoint deviation 0…10V available. In this case, 5V corresponds to a control deviation between setpoint and actual value (the command variable without priority control) of 0% volume flow. In terms of control technology, this corresponds to -eqv.s (dw). This function is mainly used for generating an alarm at a fume cupboard control panel like the SAUTER FCCP100Fxxx.
Mode
Switchover mode is used to change over terminal 02. The connection can generally be switched as an analogue input (factory setting) or an analogue output.
Mode: Analogue in
If the connection is enabled as an analogue input, the same functions as for terminal 01 are available. The factory setting is 0…10V. To switch over to other ranges, click on the radio button. In addition to the 0…10V range, a 2…10V range and a freely configurable range can generally be selected. The free configuration function allows reversal of the signal range up to 10…0V, for example. As for analogue input 01, input damping and the logical state of the input can also be selected.
Mode: Analogue out
If terminal 02 is enabled as an analogue output, function ranges 0…10V, 2…10V and freely configurable characteristics are available. If the free characteristic is selected, the start and finish points for the characteristic can be selected freely, as for the analogue input.
Vmax + V
- V
0 0
cqV.s
10V
B11695
Vmin
-eqV.s 10V
rqV < cqV.s
0 rqV = cqV.s
r-c rqV > cqV.s
B11697
5
Tab. 17 Description of parameters - analogue input
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CASE VAV ASV115 parameterisation Restrictions for 24V DC operation Not connected analog inputs will be interpreted as 0V. The nominal volume-flow compact controller torque will be obtained within specified tolerances (see PDS 52.100, PDS 52.150). Terminal 02 can be used only as an analogue input.
NOTICE
8.12.3 Analogue output, Terminal 03
1
Fig. 40 GUI: parameter AO 03
1
Therefore Xi Values > 100% are transferred.
Parameter
Description
Function
The output‘s function is entered automatically in the Function field. The technical control function of the output is shown here. Factory setting: rqv (Xi), actual value for volume flow in relation to the set values for 0% to 100% of volume flow, corresponding to Vnom. The rqv signal is scaled between these values.
Mode
Function ranges 0…10V, 2…10V and a freely configurable characteristic are available. If the free characteristic is selected, the start and finish points for the characteristic can be selected freely, as for the analogue input.
Mode: 0…10V = 0…100%
The output signal is scaled to 0…10V and it represents the effective actual volume flow value in relation to Vnom ≙ 100%.
Mode: 2…10V = 0…100%
The output signal is scaled to 0…10V and it represents the effective actual volume flow value in relation to Vnom ≙ 100%.
Mode: Freely configurable
The output signal can be freely configured. In this case, scaling is based on the set parameters and represents the effective actual value for volume flow in relation to the parameterised Vnom.
Vnom
0 0
100%
V
B11585
rqV
10V
Tab. 18 Parameter description, analogue output 03
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CASE VAV ASV115 parameterisation 8.12.4 Digital Inputs, Terminal 04 and Terminal 05 Digital inputs 04 and 05 are generally used for priority control of the ASV115. Special operating statuses can be controlled on a defined basis in this way.
Fig. 41 GUI: parameters DI 04 and DI 05 Parameter Sense of action
Sense of action
Function A make contact must be connected at the input. Operating the contact triggers the parameterised function. Factory setting A break contact must be connected at the input. Operating the contact triggers the parameterised function.
Tab. 19 Parameter description: DI 04 and DI 05
Factory settings can be replaced by project specific functions by using the VAVsetpoints page (see chapter 8.12.4)
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CASE VAV ASV115 parameterisation 8.13 Settings for VAV control loop On the VAV control loop page, all the parameters required for commissioning and optimising the control loop are grouped together.
Fig. 42 GUI: Parameterisation for control loop
All data entered are automatically transferred to the overview page.
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Parameter
Description
Sensor: Damping
Setting for internal signal damping on the pressure sensor. If the pressure signal fluctuates greatly, the damping can be increased to avoid vibration of the volume-flow compact controller. Setting range: • 0.000 s • 0.010 s • 0.020 s • 0.041 s • 0.082 s • 0.163 s • 0.326 s • 0.650 s • 1.300 s • 2.600 s • 5.220 s
Control loop: P-band
According to choice, the P-band can be entered in m3/h or %. The reference variable is Vnom .
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CASE VAV ASV115 parameterisation Parameter
Description
Control loop: Neutral zone
According to choice, the neutral zone can be entered in m3/h or %. The reference variable is Vnom .
Drive: Drive time (max. speed)
Setting for the maximum volume-flow compact controller running time for a 90° angle of rotation. Setting range: ASV115CF152
ASV115CF132
3 s
30 s
4 s
45 s
5 s
60 s
6 s
75 s
8 s
90 s
10 s
105 s
12 s
120 s
15 s Direction of rotation
CW damper opens clockwise CCW damper opens anti-clockwise
Adaptation at
Two options are available for automatic adaptation of the angle of rotation: When the power supply is applied or when it returns after an interruption, the volume-flow compact controller moves to both stops for the angle of rotation limitation and re-adjusts the internal position feedback signal. Automatic adaptation of the angle of rotation is switched off.
Tab. 20 Parameters for volume-flow compact controller and control loop
The slower the selected volume-flow compact controller running time, the less the control loop will tend to oscillate. The volume-flow compact controller switches off automatically when the end position is reached. At regular intervals, the volume-flow compact controller starts up repeatedly to retain the definition of the end position for the damper. 8.14 VAV-setpoints The VAV-setpoints parameterisation page groups together all the parameters for possible settings of volume flow setpoints. In addition, a wide range of parameters can be set for priority control and setpoint shift, and for desired behaviour in case of malfunctions. 8.14.1 Volume flow values The following definitions apply to project-related input of volume flow parameters: • The air density at the installation location can vary greatly due to the height above sea level, causing intolerable deviations in the air volumes. This can be avoided by entering the air density at the installation location. The correction is made directly in the programme, and the necessary differential pressures 58/92
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CASE VAV ASV115 parameterisation
•
•
•
•
at the measuring point are recalculated so that the controller uses these new values for volume flow control. The design value Vn AT of the volume flow box becomes effective with the correction of the air density for Vn. For example, Vn AT represents the nominal volume flow over the volume flow box which is attained at a ∆p of approx. 250Pa and which corresponds to an air velocity of approx. 12 m/s. These values may differ depending on the various manufacturers of volume flow boxes, and they correspond to the value for the volume flow box in the manufacturer‘s catalogue. Vn effective corresponds to the VnAT effective which is parameterised when calibrating the volume flow box at the manufacturer’s factory. The effective air density is integrated into this value at the time of parameterisation. Vnom corresponds to the nominal volume flow in the plant. The sensor is calibrated to this value so that the measuring range corresponds to 100% of the plant volume flow. Vmax limits the command variable signal to the maximum desired volume flow in the plant. According to choice, the value can be entered as an absolute value or a percentage, in relation to Vn effective or Vnom.
Calculation of Vmax in %: Vmax
V 100%
• Vmid is a freely paramaterisable value between Vmax and Vmin. The following rule is applicable: Vmax ≥ Vmid ≥ Vmin • Vmin limits the command variable signal to the minimum desired volume flow in the plant. According to choice, the value can be entered as an absolute value or a percentage, in relation to Vn effective or Vnom.
Vnom
Vmax
Calculation of Vmin 0
10V
B11586
Vmin 0
& m3 Vmax h (%) = * 100% & m3 Vnom h
& m3 Vmin h * 100% in %: Vmin (%) = & m3 Vnom h
• Vint is an additional internal setpoint which can be used for different functions. Vint is only limited by Vnom. Hence, Vnom ≥ Vint • The setpoints for the air volume flows are entered directly in m3/h or per cent and relate to Vn effective or Vnom. • The coloured display for a quick visual check of air velocity (and hence the design data) follows generally used conventions: • Red air velocities > 10 m/s and < 2.5 m/s • Yellow air velocities from 8 m/s to 10 m/s • Green air velocities between 3 m/s and 8 m/s • In the differential pressure column, the differential pressure in pascal is calculated over the measuring point; this can be used as the basis for the control measurement on the connections of the volume flow box. To avoid extensive conversions of volume flows, the programme shows the dependencies directly in the various columns. The absolute volume flow values in the set unit are entered directly in the first column and the relative data in per 7010022003 C
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CASE VAV
cent are entered in the following columns. For this purpose, you are advised to set Vnom as equal to the Vmax value. This allows the percentage setting for the volume flow values to be made directly in the column with the grey background (‘According to Vnom’).
Fig. 43 GUI: available VAV setpoints Parameter
Function Description
Local air density
By default, the air density is defined as 1.2 kg/m3, and it is indicated by the manufacturers of the volume flow boxes together with the c-factor. If the air density at the installation location diverges from this value, the Local air density parameter can be used to make a correction. All dependent values are automatically corrected in the programme.
Vn effective
Maximum volume flow over the volume flow box, referring to the manufacturer‘s design data for the volume flow box.
Vnom
Volume flow to which the internal pressure sensor is automatically set. Vnom therefore corresponds to the calibration to a range of 100% for the maximum possible volume flow over the volume flow box.
Setpoint: Vmax
Maximum permitted volume flow for the application. Values are determined on a project-specific basis. Adjustable range: V1Pa…Vnom.
Setpoint: Vmid
Vmid represents a value between Vmax and Vmin which can be freely selected. Vmid cannot be greater than Vmax or smaller than Vmin.
Setpoint: Vmin
Minimum permitted volume flow for the application. The value is determined on a project-specific basis. Adjustable range: V1Pa…Vmax. Vmin cannot be set greater than Vmax.
Setpoint: Vint
The internal setpoint is an additional setpoint which can be selected independently of all other setpoints and inputs. Adjustable range: V1Pa…Vnom. Vint cannot be set to a value that is larger than Vnom.
Tab. 21 Description of parameters for VAV setpoints
Factory setting If there is no external setpoint specification, the set Vmin value is used as the active setpoint. This setpoint can be changed by assigning a further setpoint for the status NC=open in the “Forced operation“ section. 60/92
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CASE VAV ASV115 parameterisation 8.14.2 Behaviour in case of malfunctions In this section, you can define how the volume-flow compact controller should behave when an error occurs in the system.
Fig. 44 GUI: Behaviour on failures
• In general, the following functions are available to parameterise an emergency position. For the indicated volume flow values, these are the parameterised volume flow setpoints. • Volume-flow compact controller stop; the volume-flow compact controller remains in its current position. • Damper open; the volume-flow compact controller moves the damper to the end position, (open). • Damper closed; the volume-flow compact controller moves the damper to the end position, (closed). • Control to Vfailure • Control to Vmin • Control to Vmid • Control to Vmax • Control to Vint • Control to Vvar Parameter
Function
Common failure
If an error occurs on the system which cannot be explicitly shown as a sensor or communication error, e.g. a fault on the motor, a defined function can be selected for it here.
Sensor failure
If an error occurs on the integrated sensor such as loss of data connection or overload if incorrect pressure is applied, the set parameter is approached by the device.
Communication failure
If communication with other devices in the network is broken off due to connection faults or interruption, the set parameter is approached by the device.
Vfailure
If a defined volume flow is also required in an emergency, it can be parameterised independently of all other setpoints. This value cannot be controlled for a sensor error.
Tab. 22 GUI: parameters for setpoint shift
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CASE VAV ASV115 parameterisation 8.14.3 Setpoint shifting, ∆V (AI02) If terminal 02 is configured as an input, it can be used for setpoint shift. For example, this occurs when a room pressure controller is connected to the volume flow controller and a parallel shift of the setpoint is required to correct the room pressure. In general, the shift is always defined as +/- 5V. For a 5V input, the setpoint shift is always 0.
Fig. 45 GUI: Parameter Setpoint shifting,
The following parameters are available:
V Vnom
100% Vmax + V
Description
Source
The field shows the designation for the connection to which the function relates.
Shifting factor
The setpoint shift factor represents an amplification factor of the signal which is present at the analogue input. This enables you to choose how much the external signal should be amplified. The following applies: Value = 0: shift is inactive Value ≠ 0: shift is active
Shifting limitation
The limitation is defined in % of volume flow of Vnom. The highest and lowest permitted values can be entered.
- V
B11695
Vmin 0 0
Parameter
10V
cqV.s
Tab. 23 Parameters for setpoint shift
V P2
80%
Example for calculating the resultant setpoint shift
0 2
-40%
10
U(AI02)
ZP
B11696
P1
In order to obtain the value for the resultant setpoint shift as a percentage of the air volume, the configuration of connection AI02 should also be taken into account. If, for example, the input has been freely configured, and you have chosen 2.00 V (= -40%) as the start, 10.00 V (= 80%) as the end and 0.25 as the factor for the shift, then a voltage of 3 V applied to connection AI02 will cause the following percentage setpoint shift. First identify the slope m
Then calculate the voltage zero crossing ZP
62/92
m=
80% ( 40%) = +15% / V 10.00V 2.00V
ZP = −40% − m * 2 = −40 − 30 = −70%
7010022003 C
CASE VAV ASV115 parameterisation The caused setpoint shift is
shift[%] = 0.25 * ( ZP + 3V * m) shift[%] = 0.25 * ( 70 + 45) = 6.25%
Or all in one:
80% − (−40%) shift [%] = 0.25 * (3V − 2V) * + (−40%) = −6.25% 10.00V − 2.00V
8.14.4 Forced operation, (DI 04 / DI05) Digital inputs DI04 and DI05 can be used to parameterise up to four independent control positions or damper positions.
Fig. 46 GUI: priority control via digital input
• The fields for the connection designation (Source) describe the connection terminal associated with the switch position. • Depending on the combination shown for the switch position on the user interface, the desired function can be parameterised freely in the adjacent pulldown box. The following functions are available: • Volume-flow compact controller stop; the volume-flow compact controller remains in its current position. • Damper open; the volume-flow compact controller moves the damper to the end position, (open). • Damper closed; the volume-flow compact controller moves the damper to the end position, (closed). • Control to Vmin • Control to Vmid • Control to Vmax • Control to Vint • Control to Vvar; the volume-flow compact controller controls to the setpoint in relation to the 0…10V command variable signal
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CASE VAV
If multi-stage operation is parameterised via the forced operation command, the external contacts must be reciprocally locked. To enable the VAV control system, at least one combination should be set on the Vvar. The functioning of the relevant input is directly related to its parameterisation, as described in section 8.10.4. The factory settings are summarised in the Table. Connection configuration
Function with factory setting
DI 05 (cqv. DI04 (cqv.prim.1) prim.2)
Vvar
Vmin
Vmax
Klappe zu
n. o.
n. o.
n. o.
o.
o.
n. o.
o.
o.
n. o.
o.
n. o.
n. o.
o.
o.
o.
n. o.
o.
n. o.
o.
o.
n. o.
n. o.
n. o. o.
o.
o.
o.
n. o.
n. o.
o.
n. o. n. o.
Tab. 24 Logic table for digital inputs
n. o. o.
Connected switch or contact is not operated, i.e. make contact is open and break contact is closed. Connected switch or contact is operated, i.e. make contact is closed and break contact is open.
8.14.5 Priority command, (AI01) As for the digital inputs, it is also possible to implement a defined priority command via analogue input 01. The same functions are basically available via the pulldown box as for forced operation control via the digital inputs.
Fig. 47 GUI: priority control via analogue input
By default, the following functions are specified by the factory setting: Designation NC = Not connected LOW voltage NORMAL Voltage HIGH Voltage OVER Voltage
Value range 0..10V < -0.69 V -0.5 – 0.3 V 0.7 – 9.8 V 10.2 – 11 V > 11.4 V
Value range 2..10V < -0.69 V - 0.5 – 2.2 V 2.6 – 9.8 V 10.2 – 11 V > 11.4 V
Function Vmin Damper closed Control range Vvar Control range Vvar Damper open
Tab. 25 Priority control via analogue input 01 64/92
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CASE VAV ASV115 parameterisation 8.15 Device information In cases where support is needed, the device information should be read out from the volume-flow compact controller and communicated. This information is also used to identify the device uniquely within the project.
Fig. 48 GUI: device identification
The data cannot be changed. Parameter
Description
VAV controller: Serial number
Unique device number, assigned during manufacture of the volume-flow compact controller and used for tracing back to production.
VAV controller: Production date
Production date of the device as shown on the volume-flow compact controller nameplate.
Pressure sensor: Serial number
Unique device number, assigned during manufacture of the sensor and used for tracing back to production.
Pressure sensor: Production date
Production date of the sensor, may differ from the production date of the volume-flow compact controller.
Pressure sensor: Calibration date
Date of last calibration; may differ significantly from the production date, as recalibration in the field is possible. This does not refer to a possible zero point adjustment.
Pressure sensor: Measuring range
Measuring range (fs) of the sensor used in Pa.
Pressure sensor: Gain ∆p
Gain∆p =
pmax .Sensor ∆p (Vnom )
The value is internally calculated and verified. It must be between 1 and 3 and may be influenced by a change in the c-value or in Vnom. If the value is not between 1 and 3, there will be an error message during the download. Pressure sensor: Gain volumeflow
•
Gain V = GainP The value is internally calculated and verified.
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CASE VAV
Parameter
Description
Pressure sensor: Offset
Adjusted offset of the sensor in Pa. This is only influenced by the zero point adjustment function. The offset is recalculated and stored in the device.
Tab. 26 Parameter device information
8.16 Monitoring The area Monitoring shows the volume flow setpoint value and actual value, the operating pressure and the damper position in graphical and numerical form. Before you start a visualisation, we recommend that you save the current device configuration by uploading it. To display the values in the area Current values and start a visualisation, click Start monitoring in the right-hand column of the GUI in the Current values area. You can view the measurement values for two volume flow controllers in parallel. To do so, you must first select a second controller by entering the network address and selecting the device type (F variant). Displaying two volume flow controllers simultaneously allows you to collect valuable information and other aspects relating to the following processes during commissioning: • Volume flow control for supply air and return air • Fluctuations in room air pressure in conjunction with fluctuations in the pressure or volume flow of supply air or return air To visualise a secondary device, select the option Visualize a second VAV Controller in the section Graph settings NOTICE
It is not possible to visualise two volume flow controllers for a point-to-point connection. Adjust the settings for the visualisation display in the Graph settings section. You can adjust the colour for the displayed parameters of a device under Primary VAV Controller. You can also define the parameter colours for a second controller if you have selected the option Visualize a second VAV Controller. You can adjust the time interval for recording measurement values under Timing settings. The number of entries is limited to 32,000. You can save the graphic data in a .csv file under Log settings and use the data for further plant diagnosis purposes. The following additional functions are also available for the visualisation display: • Zoom-in/zoom-out: left-click in the visualisation area and simultaneously scroll with the mouse.
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CASE VAV ASV115 parameterisation • Editing the visualisation: right-click in the visualisation area. You have the following options: • Copy: Copy the visualisation to the clipboard. • Save Image As: Save the current visualisation to a data carrier. • Page Setup: Show the print settings for the visualisation. • Print…: Print the visualisation (with prior selection of the target printer). • Show Point Value: Hover the mouse cursor over a curve to display the measurement values. • Un-Zoom: Zoom out one level. • Undo all Zoom/Pan: Restore the original size of the visualisation and scale after zooming. • Set scale to default: Display recorded measurement values over the entire recording period. 8.17 Diagrams The Connection diagram area is purely for information purposes and is intended to give on-the-spot support for installation or troubleshooting. The diagrams shown indicate the control signal flow in the application (Application diagram) and the assignment of cable connections (Wiring diagram). 24V~/=
MM
BN
RD
BK
GY
VT
WH
OG or PK
YE
24V
AI
AI/A0
A0
DI
DI
D+
D-
C
LS
01
02
03
04
05
06
07
08
GN
RS-485
ASV115 BU
BN
RD
BK
blau
braun
rot
blue
brown
bleu
brun
GY
A10519
BU
VT
WH
OG or PK
YE
GN
schwarz grau
violett
weiss
orange oder gelb pink
red
black
grey
purpel white
orange or pink
yellow green
rouge
noir
gris
pourp- blanc re
orange ou rose
jaune
grün
vert
Fig. 49 Cable connections ASV115
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CASE VAV Service functions
9
Service functions
9.1
Manual operation For commissioning or troubleshooting purposes, the volume-flow compact controller can be operated manually. To do this, the Manual operation function should be selected in the Service functions area. The illustrated functions are available. You can select the function you want and enable it by clicking on the Set mode button. If the Manual operation dialogue box is closed, the current status is shown under the button in the Service area.
Fig. 50 Dialogue box: Manual mode Function
Description
Mode: Damper open
The volume-flow compact controller opens the damper as far as the limitation on the angle of rotation The damper is closed as far as the angle of rotation limitation. The control and the volume-flow compact controller are stopped in the current position. The angle of rotation entered in the field is approached. The volume-flow compact controller remains stationary on reaching this point. Any desired volume flow, indicated in per cent, is set and held. The minimum set volume flow is approached. The maximum set volume flow is approached.
Mode: Damper closed Mode: Stop drive Mode: Move to angle and stop Mode: Volumeflow Mode: Vmin Mode: Vmax Mode: None: Manual operation = disabled Working angle: Adapt working angle Working angle: Get working angle
Factory setting: the volume-flow compact controller is reset to the normal operating mode. The volume-flow compact controller performs the adaptation of the angle of rotation by automatically moving to the angle of rotation limitations, and then it resets the positioner. The angle of rotation currently set is read out.
Tab. 27 Parameters for manual mode
If the connection to SAUTER CASE VAV is interrupted, the volume-flow compact controller automatically changes back to control mode after 30 s. 7010022003 C
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CASE VAV Service functions 9.2
Zero point adjustment Mouse-click on the Zero point adjustment button to force a sensor adjustment. First, you see a window indicating that the two measuring connections must be removed. After confirming with Proceed, a sensor adjustment is performed. Only the zero point of the sensor is reset in this case, i.e. the offset of the sensor is changed. NOTICE
9.3
This procedure is not a calibration.
Current value On starting the online query (by clicking the Start monitoring button), the main operating parameters are continually read out from the actuator and displayed. All values are shown in relative form in per cent, or in absolute form in the respective physical units. The values are updated as per timing setting. The following information is available:
Fig. 51 GUI: Current value Parameter
Description
Setpoint
Setpoint as currently set, may be an internal or external value. The displayed value is limited by the Vmin and Vmax setpoint (The display does not include any setpoint shift).
Current value
Current actual value feedback by the volume flow measurement.
Damper position
Current value for position feedback from volume-flow compact controller as angle of rotation.
∆p
Current differential pressure feedback by the sensor.
Tab. 28 Parameters for online values
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CASE VAV Volume flow control
10
Volume flow control
10.1 General information Recommended values or factory settings which have been automatically loaded during the configuration of the VAV compact controller have been tried and tested, but they do not necessarily represent the optimal solution for every plant. For this reason, no liability is assumed for the values indicated.
MM
-
+
first priority reference variable generator
LS
-eqV.s
+
logic
second priority reference variable generator second priority command switch
D
D
A
cqV.p.ad
A
-eqV.s
BUS controller
M
RS-485
B11707
C D+ D-
MM
AI/AO 02
AI 01
DI 05
cqV.s
cqV.p.1
rqV
A
DI 04
+
P
D
AO 03
E
dp
dp-Sensor
first priority command switch
VAV controller
+
24V
MM
Fig. 52 Block circuit diagram of the ASV115
10.2 Area of application For air-conditioning plants, a distinction is drawn between constant-volume flow and variable volume flow plants; the former are controlled via the supply air temperature and the latter via the supply air quantity, while the supply air temperature remains almost constant. For secondary air treatment, increasingly frequent use is made of plants with variable volume flow (VAV) in conjunction with intelligent unitary control, in order to cut energy costs while maintaining the required high level of comfort in the rooms. The VAV controller is used to measure the air quantity for each room and to compare it with the signal from the room temperature controller as the setpoint. Suitable setpoint limiters in the VAV controller can fix the minimum and maximum volume flow as desired. The VAV controller then controls the damper until the correct volume flow is present, regardless of the channel pressure and the damper characteristic. A channel pressure control which reduces the fan power accordingly will suffice to ensure that pressure in the channel does not rise with small volume flows. The ASV115CF152 VAV compact controller with 3 s running time was specially developed to control critical applications with fast control loops in laboratory and pharmaceutical environments. It is suitable for plants with variable and 7010022003 C
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CASE VAV Volume flow control constant air volume flows. A large number of practically tested standard solutions are available, and these can be configured on commissioning with SAUTER CASE VAV. The VAV compact controller can generally be used for the following applications: • control of constant air volume flows • control of variable air volume flows • supply air / exhaust air cascade control • for open or closed rooms with overpressure/underpressure control • control of laboratory fume hood systems (ASV115CF152) • supply and exhaust air control in laboratories Depending on the version of the firmware for the volume flow controller, various configurations are supported by the device. The CASE – VAV PC software can be used to read out the firmware version loaded in the device. 10.3 Functioning of the volume flow controller 1 cqV
%V
max.
min.
2 m
V
0
3
B07221
r
Fig. 53 Block circuit diagram for volume flow control
The pressure difference created at the orifice plate or at a dynamic pressure sensor is converted into a linear flow signal by a root-extracting transducer (3). The command variable signal cqV (e.g. from a temperature controller) is limited by the minimum and maximum adjuster (1) and is compared with the actual volume flow value rqV. The control deviations are levelled out by the controller (2) with no remaining errors. The output signal m of the controller is specified for the internal volume-flow compact controller, whereby the volume flow over the damper is adjusted according to the setpoint/actual value deviation until the setpoint is reached. As can be seen from the block circuit diagram, the command variable signal cqV is trimmed at the top and bottom, and is only used between the setpoints for the Vmin and Vmax adjusters. If there are volume flow boxes of different sizes in the same room, it is important that the setting for the plant-specific maximum 72/92
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CASE VAV Volume flow control volume flow, for a setting value of 100 %, is made on the Vmax adjuster via the gain setting, i.e. that the measuring range of the differential pressure sensor is calibrated to the maximum volume flow. It follows that for all the volume flow controllers for each room, the minimum volume flow must be set as a percentage of the maximum volume flow value, i.e. all Vmin and Vmax adjusters have the same set value for each room. Planning and installation errors A well-designed ventilation plant is required to ensure that a CAV or VAV plant functions perfectly. For this purpose, appropriate upstream pressure must be guaranteed in the duct system as well as a sufficiently long flow distance upstream of the volume flow controller. If the upstream pressure is not adequate, the control damper will remain in the open position. Poor installation conditions and consequently unfavourable flow conditions for the measuring equipment encourage volume-flow compact controller vibration, leading to unstable control or, in the worst-case scenario, early failure of the damper drive due to increased wear.
B10935
NOTICE
Fig. 54 Volume flow controller installed on VAV box
10.4 General information on volume flow measurement 10.4.1 Measuring principles There is no direct measuring method for volume flow. Of the large number of indirect methods, those using the pressure differential and air velocity principles have mainly become established in the air-conditioning sector.
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CASE VAV Volume flow control Measuring principle
Technical features
Orifice, baffle, Venturi nozzle
d
V
D
-
+ p
B07188
Non-linear ∆p signal Integral measurement Remaining pressure loss, flow resistance Not very sensitive to contamination and aggr. gases • Pressure difference (operating pressure) ∆p = 2.3 × ρ/2 × v2 for an orifice d/D = 0.87 • • • •
Pitostatic tube after Pitot and Prandtl
V
+
-
p
B07189
Non-linear ∆p signal Point measurement Low pressure signal for low air velocities Not very sensitive to contamination Negligible pressure loss, almost no flow resistance • Differential pressure (operating pressure) ∆p = ρ/2 × v2 • • • • •
Measuring cross, differential pressure sensor
V
+ p B07190
• Non-linear ∆p signal • Integral measurement • For low air velocities, more than 2× greater pressure signal than with pitostatic tube • Not very sensitive to contamination • Negligible pressure loss, almost no flow resistance • Pressure difference (operating pressure) ∆p ≈ 2.3 × ρ/2 × v2 ρ = spec. weight of air [kg/m3] v = av. air velocity in duct [m/s]
Air-flow probe XAFP100
QV
+ B12035
• Non-linear ∆p signal • Integral measurement • For low air velocities, more than 2× greater pressure signal than with pitostatic tube • Not very sensitive to contamination • Negligible pressure loss, almost no flow resistance • Pressure difference (operating pressure) ∆p ≈ 2.1 × ρ/2 × v2 ρ = spec. weight of air [kg/m3] v = av. air velocity in duct [m/s]
Sensor principles Heat transfer principle ∆t • • • • • •
Heizung
V
T
o
C
Non-linear resistance signal Point measurement High measuring signal even for low air velocities Sensitive to contamination Low flow resistance Low long-term stability
B07191
Dynamic pressure measurement ∆p
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CASE VAV Volume flow control Measuring principle
Technical features
V
• • • • •
Non-linear resistance signal Bypass measurement Low flow Not very sensitive to contamination Average long-term stability
• • • • •
Non-linear ∆p signal Membrane pressure sensor Insensitive to contamination High long-term stability High accuracy
B07192
Static pressure measurement ∆p
V
p
B07193
Tab. 29 Measuring principles for volume flow
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CASE VAV Volume flow control 10.5 Design of volume flow boxes The flow chart shows a recommendation how a VAV-box sizing can be performed Size the VAV box
Air flow m3/h
Calculate the c factor
Air flow l/s
Air flow cfm
The static pressure at nominal air flow should not exceed 100 Pa, and the air speed should not exceed 10 m/s. This avoids unnecessary pressure losses and reduces flow noice.
Select the VAV box with a c factor that is one level higher than the c factor stated in the data sheet.
Calculate the pressure loss for the nominal air flow.
B12059
Check the air speed.
Fig. 55 Flow chart – sizing of a VAV - Box
10.6 Calculation formulas 10.6.1 Volume flow calculation Volume flow is generally described by the following formula: •
V ≈
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p v (1)
7010022003 C
CASE VAV Volume flow control where pv is the dynamic pressure which is usually measured with a Pitot (pitostatic) tube. The relationship between dynamic pressure and differential pressure can be established by introducing a Pitot factor PF hence,
pd = PF * pv (2). Combining formulas (1) and (2) gives the equation for a volume flow calculation when the differential pressure is recorded using a Pitot tube measuring point: •
V=
pd (3). PF
Manufacturers of volume flow boxes usually indicate a flow coefficient – c-factor – for their boxes. This value is used for the calculation according to the following formula: 2
•
V = c*
• V pd (4) bzw. pd = * (5). c
Attention should be paid here to the unit (l/s or m3/h), and the air density for which the c-factor is stated. Appropriate corrections may be required. In general, c-factors are indicated for air density ρ = 1.2 kg/m3. The SAUTER CASE VAV tool offers these corrections when entering the values in the Overview and Volume flow box areas. The volume flow in the duct is generally calculated with: •
V [m3 / h] = ( A[m 2 ] * v[m / s ]) * 3600 (6) The flow velocity can therefore generally be calculated with •
V v= 2 (7) for round cross-sections and r *Π •
V (8) for rectangular duct cross-sections. v= h *b 10.6.2 Air density A precise determination of the air density requires consideration of the air humidity, because this changes the gas constant of the air. After adjustment of
the gas constant, the equation
7010022003 C
=
p R f *T
is used.
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CASE VAV Volume flow control The gas constant of humid air is calculated with:
Rf =
Rl , where 1 − (ϕ * pd / p ) * (1 − Rl / Rd )
J is the gas constant of dry air, kg * K J is the gas constant of water vapour, Rd = 461 kg * K
Rl = 287.05
ϕ is the relative air humidity (e.g. 0.76 corresponding to 76 %) and p is the ambient pressure in pascal. pd is the saturation vapour pressure of water in air and is calculated empirically with the help of the Magnus formula, with sufficient accuracy for applications in air-conditioning technology:
pd = 611.213Pa
17.5043* 241.2°C +
where the ambient temperature in °C between -30°C and +70°C is inserted for ϑ. This equation supplies the vapour pressure in pascal. Alternatively, this formula may be used:
pd = 611.213Pa
4102.99 17.2799 − ( + 273.15 )−35.719
Particularly accurate values can be read from steam charts. 10.6.3 Conversion of units Target unit
Conversion
l/s
m3/h / 3.6
Cfm
m3/h / 1.6990107955
m /h
l/s * 3.6
Cfm
l/s * 2.1188800033
3
m /h
Cfm * 1.6990107955
l/s
Cfm / 2.1188800033
1 mmH2O
9.80665 Pa
1 bar
100,000 Pa
3
Tab. 30 Conversion of units Einheit
bar
mbar
Pa
kPa
mWs
≡
1
1000
100000
100
10.1971
1 mbar
≡
0.001
1
100
0.1
0.0101971
1 Pa
≡
0.00001
0.01
1
0.001
0.000101971
1 kPa
≡
0.01
10
1000
1
0.101971
1 mWs
≡
0.0980665
98.0665
9806.65
9.80665
1
1 bar
Tab. 31 Conversion Table for Pressure
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CASE VAV Customer service
11
Customer service Address of your local SAUTER service points in Europe:
7010022003 C
SAUTER Schweiz Sauter Building Control Schweiz AG Kägenstrasse 17 CH-4153 Reinach Tel. +41 61 717 75 75 Fax +41 61 717 75 00
SAUTER Deutschland Sauter-Cumulus GmbH Hans-Bunte-Strasse 15 DE-79108 Freiburg i. Br. Tel. +49 761 510 50 Fax +49 761 510 52 34
SAUTER France Sauter Régulation S.A.S. 30 Rue Marc Seguin - B.P. 2059 FR-68059 Mulhouse Cedex Tel. +33 3 89 59 32 66 Fax +33 3 89 59 40 42
SAUTER Ibérica Sauter Ibérica S.A. Jacint Verdaguer, 34-38 ES-08902 L’Hospitalet (Barcelona) Tel. +34 93 432 95 00 Fax +34 93 432 09 08
SAUTER Österreich Sauter Mess- u. Regeltechnik GmbH Niedermoserstrasse 11 AT-1222 Wien Tel. +43 1 250 230 Fax +43 1 259 95 35
SAUTER U.K. Sauter Automation Ltd. Inova House Hampshire Int’l Business Park Crockford Lane, Chineham UK-Basingstoke RG24 8WH Tel. +44 1256 37 44 00 Fax +44 1256 37 44 55
SAUTER Italia Sauter Italia S.p.A. Via Natale Battaglia 40 IT-20127 Milano Tel. +39 02 280 481 Fax +39 02 280 482 80
SAUTER Nederland Sauter Building Control Nederland B.V. Gyroscoopweg 144a P.O. Box 20613 NL-1001 NP Amsterdam Tel. +31 20 5876 701 Fax +31 20 5876 769
Sauter Building Control International GmbH Hans-Bunte-Strasse 15 DE-79108 Freiburg i. Br. Tel. +49 761 510 50 Fax +49 761 510 52 34
SAUTER Belgium N.V. Sauter Controls S.A. ’t Hofveld 6-B-2 BE-1702 Groot Bijgaarden Tel. +32 2 460 04 16 Fax +32 2 460 58 97
SAUTER Magyarország Sauter Automatikai Kft. Fogarasi u. 2 - 6.III. em. HU-1148 Budapest Tel. +36 1 470 1000 Fax +36 1 467 9000
SAUTER Srbija Sauter Building Control Serbia doo Alekse Nenadovica 15 SRB-11000 Belgrad Tel. +381 1 1383 5571 Fax +381 1 1245 2260
SAUTER Ceská republika Sauter Automation Spol. s.r.o. Pod Cimickým hájem 13 a 15 CZ-18100 Praha 8 Tel. +42 02 660 12 111 Fax +42 02 660 12 221
SAUTER Polska Sauter Automatyka Sp. z o.o. Ul. Postępu 1 PL-02-676 Warszawa Tel. +48 22 853 02 92 Fax +48 22 853 02 93
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CASE VAV Customer service
SAUTER Sverige Sauter Automation AB Krossgatan 22B SE-16250 Vällingby Tel. +46 8 620 35 00 Fax +46 8 739 86 26
SAUTER Slovensko Sauter Building Control Slovakia s.r.o. Viedenská cesta 5 SK-85101 Bratislava Tel. +421 2 6252 5544 Fax +421 2 6252 5543
Tab. 32 Contact information SAUTER subsidiaires Europe
Please refer to www.sauter-controls.com for additional contact information worldwide.
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7010022003 C
CASE VAV Rectifying problems
12
Rectifying problems The following table lists typical problems that may occur during installation, configuration or commissioning. Fault
Cause
Rectification
Damper stays open
Insufficient air pressure in duct system
Switch on ventilation
Air pipes incorrectly connected
Check the + and – connections on the air volume box and on the drive
No power supply
Apply power
Control damper is jammed or incorrectly fitted
Check that damper moves freely or adjust damper position by loosening the drive linkage and re-positioning the damper.
Poor flow admission at the differential pressure sensor
Re-fit VAV box, ensuring that the flow admission is sufficiently long and calm. Alternatively, utilise a flow rectifier.
Command signal not constant
Check size of cable. Increase the input attenuation.
Drive oscillates
P-band and neutral zone are Set control parameters incorrectly set correctly. Pre-pressure in duct system Check and reset the duct not constant pressure control system. Drive does not regulate
Drive is incorrectly mounted on the damper
Inexplicable control deviation Shift at input AI02 is active.
Loosen the drive and turn the damper through 90°. Alternatively, change the direction of rotation on the drive. Either deactivate the shift or configure terminal 2 as an analogue output.
Tab. 33 Rectifying problems
7010022003 C
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CASE VAV List of Abbreviations
List of Abbreviations
7010022003 C
Abbreviation
Definition
∆p
Differential pressure in Pascal
AI
Analog input
AO
Analog output
c
Control signal (Setpoint) IEC 60050-351
CAV
Constant Air Volume Flow
ccw
Counter clock wise
cqV.p.ad
Setpoin shift IEC 60050-351 (old ∆V)
cqV.prim.1
Setpoint switch 1 IEC 60050-351 (DI04)
cqV.prim.2
Setpoint switch 2 IEC 60050-351 (DI05)
cqV.s
Setpoint signal IEC 60050-351 (old Xs)
cw
Clock wise
DI
Digital Input
e
Control deviation IEC 60050-351
-eqv.s
Control deviation IEC 60050-351 (old ∆w)
Fs
Full span
m
Output signal controller IEC 60050-351
NI
NI 1000
OEM
Original Equipment Manufacturer
r
Actual value IEC 60050-351
rqV
Actual Value IEC 60050-351 (old Xi)
VAV
Variable Air Volume Flow
Vint
Internal Volumenflow
Vmax
Maximal Volumeflow
Vmid
Volumeflow within the range of Vmax and Vmin
Vmin
minimal Volumeflow
Vn
Vnominal
Vn AT
Vnominal Air Terminal
Vn effectiv
Vnominal effectiv
Vnom
Vnominal at site
Vvar
Continuous setpoint, equivalent to e.g. 0…10V command variable
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CASE VAV List of illustrations
List of illustrations Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10 Fig. 11 Fig. 12 Fig. 13 Fig. 14 Fig. 15 Fig. 16 Fig. 17 Fig. 18 Fig. 19 Fig. 20 Fig. 21 Fig. 22 Fig. 23 Fig. 24 Fig. 25 Fig. 26 Fig. 27 Fig. 28 Fig. 29 Fig. 30 Fig. 31 Fig. 32 Fig. 33 Fig. 34 Fig. 35 Fig. 36 Fig. 37 Fig. 38 Fig. 39 Fig. 40 Fig. 41 Fig. 42 Fig. 43 Fig. 44 Fig. 45 7010022003 C
Configuration flowchart Setup.exe in the SAUTER CASE VAV Tools DVD Setup.exe in SAUTER CASE VAV stand-alone zip file Installation mode of the “USB Serial Converter” Entering the path to the RS485 driver directory Installation of the “USB Serial Converter” driver in progress Completion message following successful installation of the “USB Serial Converter” driver Completion message following successful installation of the “USB Serial Port” driver GUI: SAUTER CASE VAV start screen Connecting the PC to the interface converter Connecting the ASV115 to the PC Windows system controller Windows system setting Windows Device manager Dialogue box: setting for COM port Disconnect ASV115 from PC Dialogue box: Select communication address Dialogue box: Options Units Dialogue box: Options Language Dialogue box: Options Communication GUI: SAUTER CASE VAV start page GUI: User interface, SAUTER CASE VAV Dialogue box: export the configuration to a file Dialogue box: import the configuration from a file Dialogue box: print configuration GUI: network settings Dialogue box: change address Dialogue box: device selection Dialogue box: device configuration selection GUI: data for volume flow box - overview GUI: General project data - overview GUI: volume flow setpoints - overview GUI: settings for control loop – overview GUI: Project data GUI: General data for the volume flow box GUI: Technical air data for the volume flow box GUI: Override original values GUI: parameter AI 01 GUI: parameters AI/AO 02 GUI: parameter AO 03 GUI: parameters DI 04 and DI 05 GUI: Parameterisation for control loop GUI: available VAV setpoints GUI: Behaviour on failures GUI: Parameter Setpoint shifting,
10 16 17 18 19 19 19 20 21 23 23 24 24 25 25 27 28 29 29 30 31 32 36 37 38 38 39 41 42 44 45 46 48 49 50 51 52 52 54 55 56 57 60 61 62 85/92
CASE VAV List of illustrations Fig. 46 Fig. 47 Fig. 48 Fig. 49 Fig. 50 Fig. 51 Fig. 52 Fig. 53 Fig. 54 Fig. 55
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GUI: priority control via digital input GUI: priority control via analogue input GUI: device identification Cable connections ASV115 Dialogue box: Manual mode GUI: Current value Block circuit diagram of the ASV115 Block circuit diagram for volume flow control Volume flow controller installed on VAV box Flow chart – sizing of a VAV - Box
63 64 65 67 69 70 71 72 73 76
7010022003 C
CASE VAV List of tables
List of tables Tab. 1 Connection accessories, ASV115 - PC Tab. 2 System messages, connection test Tab. 3 Adjustable units Tab. 4 Start Page functions Tab. 5 Parameters for network configuration Tab. 6 Available device types Tab. 7 Supported applications for the ASV115CF132 Tab. 8 Supported applications for the ASV115CF152 Tab. 9 Data on volume flow box - overview Tab. 10 General project data - overview Tab. 11 Volume flow setpoints - overview Tab. 12 GUI: control parameters - overview Tab. 13 Project data Tab. 14 General data for volume flow box Tab. 15 Description of parameters for analogue input Tab. 16 Factory settings: value ranges for input recognition Tab. 17 Description of parameters - analogue input Tab. 18 Parameter description, analogue output 03 Tab. 19 Parameter description: DI 04 and DI 05 Tab. 20 Parameters for volume-flow compact controller and control loop Tab. 21 Description of parameters for VAV setpoints Tab. 22 GUI: parameters for setpoint shift Tab. 23 Parameters for setpoint shift Tab. 24 Logic table for digital inputs Tab. 25 Priority control via analogue input 01 Tab. 26 Parameter device information Tab. 27 Parameters for manual mode Tab. 28 Parameters for online values Tab. 29 Measuring principles for volume flow Tab. 30 Conversion of units Tab. 31 Conversion Table for Pressure Tab. 32 Contact information SAUTER subsidiaires Europe Tab. 33 Rectifying problems
7010022003 C
15 27 29 35 39 40 43 43 44 45 47 48 49 50 53 53 54 55 56 58 60 61 62 64 64 66 69 70 75 78 78 80 81
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CASE VAV Index
Index
7010022003 C
A Air density Air terminal Analogue input Analogue Input and Analogue Output Analogue output Application Area of application ASV115 parameterisation
77 50 52 54 55 67 71 35
B Behaviour in case of malfunctions
61
C Cable connections Check installation Communication Configure device Connection and configuration Conversion of units Create set-up protocol Customer service
67 21 30 40 23 78 38 79
D De-install software Device information DI 04 / DI05 Diagrams Digital Inputs
22 65 63 67 56
E End Export configuration Extras
27 36 28
F Forced operation
63
I Import configuration Installation Installation of driver for interface converter Interface converter I/O configuration
37 15 18 23 52
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CASE VAV Index L Language List of Abbreviations
29 83
M Manual operation Measuring principles Monitoring
69 73 66
N Network settings
38
O Online monitoring Options
70 28
P Priority command, (AI01) Process of configuration Program structure Project data
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64 9 11 45, 49
R Rectifying problems
81
S Scope of delivery Select communication address Selecting the application Selecting the device Service functions Setpoints Setpoint shifting, ∆V (AI02) Setting the COM port Software installation Starting the programme Start installation Start page System requirements
15 28 41 40 69 58 62 24 15 35 16 35 15
T Terminal 01 Terminal 02 Terminal 03 Terminal 04 and Terminal 05
52 54 55 56
U Units User interface
29 31 7010022003 C
CASE VAV Index
7010022003 C
V VAV control loop VAV control loop parameter Volume flow control
57 48 71
Z Zero point adjustment
70
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CASE-VAV CASE VAV
© Fr. Sauter AG Im Surinam 55 CH-4016 Basel Tel. +41 61 - 695 55 55 Fax +41 61 - 695 55 10 www.sauter-controls.com
[email protected] 92/92
Printed in Switzerland
Index
7010022003 C A
